Cómo encontrar la carpeta de instalación de SQL Server
declare @rc int, @dir nvarchar(4000)
exec @rc = master.dbo.xp_instance_regread
N'HKEY_LOCAL_MACHINE',
N'Software\Microsoft\MSSQLServer\Setup',
N'SQLPath',
@dir output, 'no_output'
select @dir AS InstallationDirectory
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